Sales Representative

4 days ago

Germiston, Gauteng, South Africa SolarOn SA Full time R500 000 - R1 200 000 per year

We're seeking a technically strong IoT / Embedded Systems Engineer or Engineering Partner to help us build and integrate a field-ready control box powered by Raspberry Pi, LTE connectivity, and smart relays.

Key Responsibilities:

  1. Hardware Integration


• Configure a Raspberry Pi 4 (or equivalent) with:


• LTE/4G communication module


• RS-485 (Modbus) HAT


• 16-channel relay board


• ADC module for analog sensors


• Connect voltage, current, temperature, and irradiance sensors to the system.


• Interface with PV string and inverter controls.

  1. Software & Communication


• Develop Python or Node-RED scripts for:


• Sensor reading (RS-485 / I²C)


• Relay control via GPIO


• Fault detection logic (over-voltage, over-current, over-temp, etc.)


• Send data to SolarOn SA's Cloud Dashboard (Lovable / MQTT / HTTP API).


• Receive remote commands (e.g., turn string OFF / reset inverter).

  1. Control Box Design


• Assist in designing a DIN-rail mounted enclosure with:


• Power supply (5V/3A)


• Wiring harness for field sensors and relays


• LTE antenna and terminal blocks


• Provide wiring diagrams, PCB layout (if required), and safety isolation planning.

  1. Testing & Validation


• Bench-test full system (sensors + relays + cloud integration).


• Optimize for low data use, high uptime, and industrial reliability.


• Prepare prototype for mass production (collaboration with a panel builder).

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